Q2 QSE Review

In the diagram given, what happens as we move to the left?

• Surface temperature remains constant and stars change color to yellow.
• Surface temperature decreases and stars become dimmer and redder.
• Surface temperature increases and stars become dimmer and redder.
• Surface temperature increases and stars become brighter and bluer.

Tags

NGSS.HS-ESS1-3

Which spectral class does our star, the sun, belong to?

• M
• A
• G
• B

The Hertzsprung-Russell diagram graphs stars' luminosity and ....

• temperature
• color
• size
• mass

Which best describes area D?

• Red Giants
• White Dwarfs
• Red Supergiants
• Main Sequence

Tags

NGSS.HS-ESS1-3

Which star has the lowest temperature?

• D

• A

• B

• C

Matter can not be created nor destroyed: it can only be

• transformed
• duplicated
• destroyed
• created

Tags

NGSS.MS-PS1-5

A chemical reaction is balanced when

• the number of atoms of each element is equal on both sides of the equation.
• the products are in a different physical state than the reactants.
• the reaction occurs at a higher temperature than usual.
• the total mass of the reactants is greater than the products.

Tags

NGSS.MS-PS1-5

How many grams of OXYGEN would be needed to show conservation of mass in the example below?

• 5 grams
• 7 grams
• 10 grams
• 3 grams

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

How many grams of coal were present at the start of the chemical change?

• 50 g
• 200 g
• 75 g
• 100 g

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

Which Chemical Equation is Balanced?

• CH₄+O₂------CO₂+2H₂O

• 
  4Al+3O₂-----2Al₂O₃

• 
  H₂+O₂-----2H₂O₄

Tags

NGSS.MS-PS1-5